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Windspeed Ltd (Vector Instruments), 115 Marsh Road, RHYL, N. Wales, LL18 2AB, United Kingdom.
Windspeed Limited (trading as Vector Instruments)
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 Tuesday, August 16 2022  Home   Products   Anemometers   A100L2 Search site:  

Latest Weather...
(Rhyl, N.Wales, UK)
Wind Speed:  3.2 mph
Wind Direction:  333 °
Air Temp.:  16.3 °C
Rel. Humidity:  94.7 %
Rain (last Hr):  0.0 mm
(updated at: 05:02 UTC)

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    A100L2 Low Power Anemometer (Analog+Pulse Outputs)
    Datasheet: login to download This anemometer was developed from the proven A100 Porton™ instrument and R30 rotor design in response to demand for an anemometer offering pulse/frequency and analogue voltage outputs while consuming little supply current.

    The low power consumption, wide power supply range and choice of pulse/frequency and analogue voltage output signals make this anemometer a popular choice for use with data loggers for applications such as general meteorology and wind-power site surveying as this instrument has first class performance.

    A slotted disk interrupting a light beam is used to detect the motion of the calibrated R30 series 3-cup rotor and hence determine the wind speed. The internal electronics condition this pulse signal for output as a 5V squarewave and use it to generate an analogue voltage proportional to the wind speed.

    The A100L2 has a "secondary" analog/voltage output signal in addition to the "primary" pulse/frequency output signal, however the analog/voltage signal is less accurate (see specsheet) and we advise that only the pulse/frequency signal be used in applications requiring the highest accuracy (such as Wind Assessment).

    Please refer to the A100LK for a similar anemometer with pulse/frequency output signal only.

    For similar anemometers with a larger, and more stable, analog/voltage output signal type, please refer to our A100L2/E or A100L2/H anemometer models.

    Construction is from anodised aluminium alloys, stainless steels and weather resisting plastics for exposed parts. Precision corrosion resistant ball-races and a stainless steel shaft enable the R30 rotor response to produce a highly sensitive yet robust instrument suitable for continuous exposure to the weather.

    Options for this anemometer include:
  • /PC3 Anti-Surge protection
  • /HE-4 Internal Anti-Icing Heater
  • /HE-1 & /HE-2 External/Retrofit Anti-Icing Heaters
  • /WR Marine Version

  • Note: /WR, /HE-1 and /HE-2 are not recommended for high precision applications.

    The recommended mounting adaptors for use with this instrument are our type 405 and 405-1 series.

    Vector Instruments A100L2 Anemometers are among the very few available having Class 1 performance ("First Class") according to the requirements of IEC and MEASNET standards.

    Specification Highlights:

  • Threshold:
  • 0.15m/s (0.3Kt)
  • Starting Speed:
  • 0.2m/s (0.4Kt)
  • Stopping Speed:
  • 0.1m/s (0.2Kt)
  • Maximum Windspeed:
  • over 75m/s (146Kts)
  • Temperature Range:
  • -30 to +70 °C
  • Accuracy (Pulse O/P):
  • 1% of reading between 20Kts and 110Kts (2% above 110Kts, 0.2Kts below 20Kts)
  • Non-Linearity (Pulse O/P):
  • 0.4% full-range output frequency (correction curve supplied)
  • Distance Constant:
  • 2.3m +/-10% (R30 rotor)
  • Overall Non-Linearity (Analog O/P):
  • 0.9% FRO (0..150Kts, at const. temp/supply voltage, rotor+ratemeter correction curve supplied).
  • Temperature stability (Analog O/P):
  • +/-2% of output (over -30..+40°C range).
  • Supply Voltage:
  • 6.5..28V DC (max 2mA, average is typically less than 1mA)
  • Analog Output Signal:
  • 0 to 2.5V = 0 to 150Kts
  • Pulse Output Signal:
  • 0V / 5V, at 10Hz per Knot (i.e. 0..1500Hz = 0-150Kts)
  • Resolution:
  • 5.15cm
  • Rotor:
  • 3-cup R30K (standard)
  • Dimensions:
  • This instrument is constructed using our standard rotor and anemometer body design and dimensions.
  • Wiring/Connections (Cable colours):
  • For wiring details click HERE
  • Cable:
  • 3m (9ft10in) permanently attached 6-conductor* cable with braided shield/screen as standard. Longer lengths are available to order (up to 115m). Spec: Def Stan 61-12 part 4, 0.22mm²(∼24AWG). *Note: 8-conductor used for /HE4 models.
  • MEASNET/IEC Calibration Certificate (optional extra):
  • The A100L2 Anemometer is available with an IEC/MEASNET Calibration Certificate on the pulse/frequency output channel (for an additional charge)
  • Regulatory/Certifications: :
  • CE and UKCA Marked for RoHS3 (RoHS2+Phthlatales amendments) and EMC

  • Obtaining best accuracy
  • Reliability & Safety
  • Specifications are correct at time of writing and may change without notice. Please contact us to confirm the latest specifications.

    Additional Information:

    This instrument is commonly used in conjunction with our W200P Windvane.
    FAQ: Obtaining Slope/Offset Figures
    FAQ: IP Ratings
    Please call/email us if you would like access to additional product information, data and specification sheets for this product.
    Windspeed Ltd (Vector Instruments)
    Windspeed Limited (trading as Vector Instruments),
    115 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
    Tel: +44 (0) 1745 350700   Fax: +44 (0) 1745 344206
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